<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./Bootstrap/css/bootstrap.min.css">
</head>
<body>
    <div class="container">
        <input type="button" value="点击">

        <input type="button" value="点击" class="btn btn-primary">
        <input type="button" value="点击" class="btn btn-info">
        <input type="button" value="点击" class="btn btn-warning">
        <input type="button" value="点击" class="btn btn-danger">

        <input type="button" value="点击" class="btn btn-info btn-sm">
        <input type="button" value="点击" class="btn btn-info btn-lg">

        <a href="#" class="btn btn-info">这是链接</a>
    </div>
</body>
</html>